A set of characters that are allowed to use in QBASIC is known as the QBASIC Character Set. The QBASIC Character Set consists of alphabets (both small and capital), numbers (0 to 9) and special characters. These special characters have their own meaning and function.
1.Alphabets (a-z or A-Z)
3. Special Characters (=, +, -, *, /,\,^ ), ( , , , . , ‘ , “ , ; , : , ! , ? , & , <,>,#,$,%)